android/src/BluetoothClientPort.java

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 package org.xcsoar;
  25
  26 import java.io.IOException;
  27 import android.util.Log;
  28 import android.bluetooth.BluetoothSocket;
  29
  30 /**
  31  * An #AndroidPort implementation that initiates a Bluetooth RFCOMM
  32  * connection.
  33  */
  34 class BluetoothClientPort extends ProxyAndroidPort implements Runnable {
  35   private static final String TAG = "XCSoar";
  36
  37   private BluetoothSocket socket;
  38
  39   private Thread thread;
  40
  41   BluetoothClientPort(BluetoothSocket _socket)
  42     throws IOException {
  43     socket = _socket;
  44
  45     thread = new Thread(this, toString());
  46     thread.start();
  47   }
  48
  49   @Override public String toString() {
  50     BluetoothSocket socket = this.socket;
  51     return socket != null
  52       ? "Bluetooth " + BluetoothHelper.getDisplayString(socket)
  53       : super.toString();
  54   }
  55
  56   @Override public void close() {
  57     BluetoothSocket socket = this.socket;
  58     if (socket != null) {
  59       try {
  60         socket.close();
  61       } catch (IOException e) {
  62         Log.w(TAG, "Failed to close BluetoothSocket", e);
  63       }
  64     }
  65
  66     /* ensure that run() has finished before calling
  67        ProxyAndroidPort.close() */
  68     Thread thread = this.thread;
  69     if (thread != null) {
  70       try {
  71         thread.join();
  72       } catch (InterruptedException e) {
  73       }
  74     }
  75
  76     super.close();
  77   }
  78
  79   @Override public int getState() {
  80     return socket != null
  81       ? STATE_LIMBO
  82       : super.getState();
  83   }
  84
  85   @Override public void run() {
  86     try {
  87       BluetoothSocket socket = this.socket;
  88       if (socket != null) {
  89         socket.connect();
  90         this.socket = null;
  91         setPort(new BluetoothPort(socket));
  92       }
  93     } catch (Exception e) {
  94       Log.e(TAG, "Failed to connect to Bluetooth", e);
  95     } finally {
  96       socket = null;
  97       thread = null;
  98     }
  99   }
 100 }